What can cause injectors not to fire?
What can cause injectors not to fire? The problem could be:Blown injector circuit fuse.Bad fuel injector power relay.A fault in the wiring harness to the injectors. How do you test a fuel injector in a car? Learn how to check fuel injectors. I use a screwdriver to test fuel injectors to make sure they are firing. You place a long screwdriver to the base of each injector and put your ear to the end of the screwdriver (like a doctors stethoscope). You should hear constant clicking. If not, then your injector isn't firing or is firing intermittently. What are the...